在金刚石压砧装置上，采用电容和电阻测量方法研究了偏硼酸钡低温相晶体（β－ＢａＢ２Ｏ４）在室温下和１６ＧＰａ内的电容、电阻与压力的关系。实验结果表明，它的电容在２．１、４．６、６．４、８、９．５、１０．７ＧＰａ左右都有一个突变。这说明β－ＢａＢ２Ｏ４内部的结构状态在这些压力下都发生了变化，可能发生了相变。还发现β－ＢａＢ２Ｏ４样品在较高压力下已发生了非晶化转变，而且是不可逆的，在卸压后被保留下来。这个非晶化转变的压力大约在１１～１２ＧＰａ The relationship between capacitance, resistance and pressure at room temperature and within 16GPa of barium metaborate (β-BaB2O4) was investigated by capacitance and resistance measurements at a diamond anvil cell. Experimental results show that its capacitance in 2.1,4.6,6.4,8,9.5,10.7 GPa have a mutation. This shows that the internal structure of β-BaB2O4 under these pressures have changed, the possible phase transition occurred. The β-BaB2O4 sample has also been found to have undergone an amorphization transition at higher pressures and is irreversible and is retained after depressurization. The pressure of this amorphization is about 11-12GPa